Baking-oven



(No Model.) z sheets-sheet 1. J. JUNKBR.

' BAKING OVEN. No.' 395,979. Patented Jan.v8,.1889.

. 2 sheets-s119992.

J. JUNKBR. BAKING OVEN.

(No Model.)

UNITED STATES PATENT EEicE.

JULES JUNKER, OF PHILADELPHIA, PENNSYLVANIA.

BAKlNG-OVEN.

SPECIFICATION forming part of Letters Patent No. 395,979, dated January 8, 1889.

Application filed September 18, 1888. Serial No. 285,669. (No model.)

To all whom it may concern.'

Be it known that I, JULES .IUNKER, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Baking-Ovens, which improvement is fully set forth in the followin specification.

This invention has reference generally to baking-ovens, and more particularly to ovens designed to be used for baking cake; and its object is to increase the capacity of the oven and to permit the simultaneous baking of articles requiring different degrees of heat.

Certain cakes-such as lady-fingers, for example-must bake rapidly and should not ordinarily remain in the oven more than tive minutes, whereas such articles as cinnamon buns must bake slowly, requiring more than an hour to bake them thoroughly. Moreover, goods which are sweet take color rapidly and in an oven which is too hot become black on the outside, and hence unsalable, before they are thoroughly baked. On the other hand, goods having little sugar, but rich in lard, take color slowly and require a hot oven in baking. The product of an oven as ordinarily constructed, when used to bake Ivarious articles differing so widely in the respects above pointed out, is necessarily restricted.

According to the present invention an additional sole is built upon the thin crown of an oven, and a small door is constructed above this sole just over the usual oven-door. This additional sole lies in the upper part of the smoke-box, just under the thick crown, and extends from end to end of the oven, but preferably only across half its width. Goods placed upon this additional sole will, on account of the higher temperature, take more color and bakequicker than goods placed in the oven beneath.

In the accompanying drawings, which form part of this specification, Figure I is a central longitudinal section of an oven constructed i n accordance with the invention. Fig. II is a transverse section thereof. Fig. III is ahorizontal section; and Fig. IV, a transverse sec tion on line x a', Fig. III.

A represents the thin crown, B the sole, D the thick crown, and E thel oven-door, all of which are or may be of ordinary construction. The crown A is, however, somewhat higher than in ordinary bread-ovens. A is laid an additional sole, C, extending the .full length of the oven, but only about half way across the same. The two lateral walls T of the sole are, say, nine inches thick, and between them the usual fire-brick tiles are laid in a bed of concrete, G, which may consist of broken fire-brick and tire-mortar. Over the usual oven-door, E, is the low door, E, for giving access to the space above sole C.

I-I H, Figs. III and IV, represent the fireplaces, and I I are fines for the passage of the hot products of combustion tothe space below the sole I3. The smoke and gases pass between the sole C and crown D, downward through flues I under the sole B, and thence they pass around a check-plate, K, and escape by a suitable chimney.

It is found in practice that an oven lconstructed as above described permits the simultaneous baking of goods requiring a very hot oven and goods requiring a moderate degree of heat with excellent results.

I clailnl. A baking-oven provided with an additional sole laid upon the thin crown of the oven, and with a door for giving access to the space above said sole, substantially as described.

2. In a baking-oven, the combination, with the sole, thin crown, and thick crown, of an additional sole laid upon the thin crown, forming a baking-chamber between it and the thick crown, said sole extending the full length of the oven and about half-way across the same, and a door opening into the space above said sole, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

JULES JUNKER. IVitnesses:

GEORGE W. SELTZER, H. CONRAD BRICK.

Above crown- 

